This standard applies to the design, selection, installation, and pre-use inspection of the electrical
equipment that falls under all of the following standards among the electrical equipment installed
in gas facilities subject to application of 「High-pressure Gas Safety Control Act」(hereinafter referred
to as the “High-pressure Gas Act”), the 「Safety Control and Business of Liquefied Petroleum Gas
Act」 (hereinafter referred to as the “LP Gas Act”), and the Urban Gas Business Act (hereinafter
referred to as the “Urban Gas Act”).
(1) Electrical equipment installed in combustible gas facilities. However, the electrical equipment
installed in the facilities which handle pyrophoric gases or combustible mist and the electrical
equipment installed in the facilities used for medical purposes are excluded.
(2) Electrical equipment used under the standard atmospheric pressure condition (Temperature
ranging from ？20 ℃ to 60 ℃, absolute pressure ranging from 80 ㎪ to 110 ㎪ and standard
oxygen concentration of 21 %)
(3) Fixed, mobile, portable, or wearable electrical equipment.
1. General Matters
1.1. Scope of Application
1.2. Effectiveness of Application
1.3. Approval of Other Standards
1.4. Terms and Definitions
1.5. Application of Standard (No Content)
1.6. Interim Measures
2. Common Standard
2.1. Basic Principles
2.2. Documentation........................................................................................................................................................ 8
2.3. Pre-use Check .......................................................................................................................................................... 9
2.4. Warranty of Electrical Equipment Suitability ...................................................................................... 10
2.5. Qualification for Designers, Selectors, and Installers .................................................................... 10
3. Selection of Electrical Equipment ........................................................................................................................ 11
3.1. Information required for Selection........................................................................................................... 11
3.2. Hazardous Area ................................................................................................................................................... 12
3.3. Relation between EPL and Hazardous Area ........................................................................................ 12
3.4. Selection of Equipment based on EPL .................................................................................................... 12
3.5. Selection of Equipment based on Electrical Equipment Group ............................................... 15
3.6. Selection of Equipment based on Ignition Temperature of Gas and Ambient
Temperature ..................................................................................................................................................................... 15
3.7. Selection of Energy Radiation Equipment ............................................................................................ 17
3.8. Selection of Ultrasonic Electrical Equipment ...................................................................................... 18
3.9. Selection of Electrical Equipment for which External Effect is taken into account ...... 19
3.10. Selection of Mobile, Portable and Wearable Electrical Equipment ............................... 20
3.11. Selection of Rotating Electric Machine .......................................................................................... 22
3.12. Selection of Luminaire ............................................................................................................................. 26
3.13. Selection of Plug and Socket (Socket Outlet) ............................................................................ 26
3.14. Selection of Battery ................................................................................................................................... 26
3.15. Selection of RFID Tag ............................................................................................................................... 27
3.16. Selection of Gas Detector ...................................................................................................................... 28
4. Prevention of Dangerous (Ignitable) Sparks from being generated .............................................. 28
4.1. Materials containing a light metal............................................................................................................ 28
4.2. Danger of Live Parts ......................................................................................................................................... 29
4.3. Danger of External and Exposed Conductive Parts ........................................................................ 29
4.4.
